I have a Dell PowerEdge 2950 that has a RAID 5 array that totals just under 5TB, during install of W2K3 I created a C: partition of 1.9TB and left the rest unpartitioned. Now that the systems up and running I want to make a D: partition from the remaining unallocated space but the option is grayed out. I know that windows can't boot from a partition larger than 2TB but I don't understand why I can't make a second partition from the remaining space.
Windows Server 2003
Last Comment
PowerEdgeTech
8/22/2022 - Mon
wantabe2
Go into computer managment & create the partition there. You should be able to create it & format it from there.
Dalexan
ASKER
I believe that's where I'm trying to create the partition at
R-click "My Computer" -> manage -> Disk Management
Then on disk 0 I have the C: partition and an unallocated 2.6GB space. When I R-click the unallocated space the option New Partition is grayed out.
Sorry ... I meant to summarize by saying there is no easy way to use the entire space at this point, as you can't "remove" drives from your existing RAID 5. In either situation, you would be doing a complete backup and restore.
David
It is not a partitioning problem, it is a LUN/device limit. I.e, if you have a single physical disk drive, then that is one target device. If you partition it into C & D, then you still have a single target device, but it is partitioned into 2 LUNs, or volumes or logical devices.
On the RAID you have same thing, you effectively made a 5TB physical disk drive (as seen by the O/S). By partitioning it, you still have a 5TB device you split into C &D. That is no good. The 32-bit limit of FFFFFFFFh blocks is the most that can be used with this O/S (which is 2.09 TB when FFFFFFFF hex is multiplied by 512)
You need to create 2 different SCSI IDs with the RAID, a C disk and a D disk, not a partitioned C drive. Some controllers will let you partition (at the RAID level) a single RAID set into multiple targets.
W/o looking up the specs, don't know if this one will, but chances are it will not. You'll just have to create a single RAID1 with 2 disks, and make that C, and then use the other disks for the D drive
Dalexan
ASKER
So far only the OS is on there so I'd just start over from scratch. With that in mind I have 6 x 1TB drives I need at least a 500GB W2k3 boot partition, the rest can be a different partition, all in RAID 5. If I start over can I make 1 array with 84 GB from each disk and the rest in a 2nd array or will I have to split it 3 and 3 ending up with about 4TB total to have all of it in RAID 5?
Is this something that needs to be done during OS install or can it be done after OS install?
PowerEdgeTech
On a 2950, I would assume you are using a PERC 5 or 6, which will both support "slicing" - or creating multiple arrays across the same set of disks - if you want to go that route. When creating the array in CTRL-R, specify the size you want the first array to be, then later you can create an array with the remaining space.
Its a PERC 5/i controller but I've already went with the RAID 1 and RAID 5 arrays
PowerEdgeTech
It's better that way, but since I missed the discussion, I thought I'd throw that out there for information's sake.
David
Personally I do it before when convenient, but you have to be able to boot that system first. If you have a USB-attached windows disk with the RAID drivers, then do formatting / partitioning on NTFS first. Then installation will go a little faste